Lateral Impact Effect on Circular RC Columns

Öz

Reinforced concrete (rc) columns are the vertical carrier members in the structural system. Generally, rc columns are divided into two parts due to their section geometry and confinement reinforcement. Columns are designed by considering the dead, live and horizontal wind and seismic loads. However, effect of impact loading that is a kind of sudden impulsive dynamic one is ignored in the design process. Carbon fibre reinforced polymer (cfrp) is an effective way to repair and to strengthen the rc columns in a fast way. So, use of cfrp in the existing structural members especially with low concrete quality has been increasing lately in terms of ease of application. Main objective of this study is numerically investigating the impact behaviour of circular sectioned rc columns before and after strengthening by cfrp technique. In line with this purpose, Abaqus finite elements software that is widely used in such problems has been utilized. Acceleration, impact load and displacement values of the rc columns as well as stress distributions are obtained after non-linear incremental numerical analysis. So, it is considered that the proposed finite element model could be useful for the researchers performing impact analysis. Besides, it is thought that the current study will contribute to the literature in the research area of dynamic responses of rc columns under impact loading.

Anahtar Kelimeler

• circular column
• impact loading
• numerical analysis
• strengthening

Kaynakça

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